Bobbin-driving means for rotatable spindles.



PATE'NTED APR. 28, 1908.-

A. D. MORSE; BOBBIN DRIVING' MEANS FOR ROTATABLB SP-INDLES' APPLICATIONFILED DEC. 6, 1607- 512R: 50-. WASHINIZTON, D. c.

- ment in Bobbin-Driving Means for Rotatable Spindles, of which thefollowing description,

UNITED STATES PATENT orrron ANDREW D. MORSE, OF HOBEDALE, MASSACHUSETTS,ASSIGNOR TO DRAPER COMPANY, OF .HOPEDALE, MASSACHUSETTS, A CORPORATIONOF MAINE.

BOBBIN-DRIVING MEANS FOR ROTATABLE SPINDLES.

Specification of Letters Patent.

Patented April 28, 1908.

Application filed December 6, 1907. Serial No. 405,318.

To all whom it may concern:

Be it known that 1, ANDREW D. MORSE, a citizen of the United States, andresident of Hopedale, county of Worcester, State of Massachusetts, haveinvented an Improvein connection with the accompanying drawing, is aspecification, like letters on the. drawing representing like parts.

This invention relates more particularly to that type of bobbin-drivingmeans for rotatable spindles of spinning, twisting or similar apparatus,wherein the driving or clutching members are moved into operativeengagement with the bobbin by or through centrifugal action. 4

In practice it has been found that at times the clutching members do notoperate evenly or uniformly; that is, if a bobbin be out of balance sothat ittends to run eccentric to to overcome the unequal or non-uniformaction of the clutching members, and the novel features of my inventionwill be fully described in the subjoined specification and particularlypointed out in the following claims.

' Figure 1 is a side elevation of a part of a rotatable spindle rovidedwith bobbin driving means embo ying my invention, one of the clutchingmembers being partly broken out and the lower part of a bobbin beingshown in section positioned on the spindle; Fig. 2 is a horizontalsection on the line 22,

Fig. 1, looking downward; Fig. 3 is an outer.

face view of one of the clutching members; Fig. 4 is an inner face Viewthereof; Fig. 5 is a partial section and elevation, omitting that one ofthe clutching members nearer the spectator, as if taken on the line 55,Fig. 2.

The rotatable spindle 1 has an attached sleeve 2 provided with a whirl3, the upper end of the sleeve being enlarged at 4 to form a headconstituting a bobbin rest, said head having an annular recess ormotion-limiting raceway 5, Fig. 5, to receive loosely the lower ends ofthe centrifugally-acting bobbinclutching members. 1

A collar 6 fast on the spindle has an annu- .other side.

lar depending flange 7', to form a second motion-limiting, raceway forthe upper ends of the clutching members, the construction thus fardescribed being well known and not of my invention. The clutchin members8 are transversely segmental, e ongated pieces of metal of such acurvature as will loosely embrace -the spindle, their lower endsentering loosely the annular raceway 5, and upturned projections 9 onthe inner faces of the members extend behind the flange 7 to limitoutward movement of the members due to centrifugal action when thespindle is rotated.

-The eneral. contour of the external faces of the c utching members issuch as to enable the said members to enter the recess 1), Fig. 1,

"in the base of the bobbin B, and internally engage and drive the bobbinin unison with the spindle, the centrifugal action forcing the clutchingmembers firmly against the walls j of the bobbin recess 1). the axis ofrotation of the s indle the clutch- In order that the clutching membersshall have a uniform, simultaneous outward movement, to thereby centerthe bobbin relatively to the spindle, rather than to permit said membersto adapt themselves to any eccen- V tricity of the bobbin, I haveprovided means whereby each clutching member cooperates, in its outwardmovement, with adjacent members, to move them equally. To that end Iprovide each member with lateral projections 10, 11, at differentdistances from the lower end of the member, the projection 10 of anymember lying back of the adjacent member at one side, while theprojection 1 1 lies back of or behind the adjacent member at the v Theprojections 10 and 11 are staggered, or arranged at different heights sothat a projection 10 will not interfere with the projection 11 of thenext member, as will be manifest.

Herein I have shown threeof the clutching members 8, arranged around thespindle, that number being commonly employed, and it will be seen thateach member cooperates with bothof its fellows, as I have hereinillustrated my invention. Now when any member is moved outward it actsupon its fellows and causes them to move outward simultaneously an equalamount, so that the outward movement of said members is uniform. Shouldthe bobbin be out of balance and tend to run eccentric to the axis ofrotation of the spindle such tendency will be corrected, for as all the.members have a uniform movement the bobbin will thereby be centered andmaintained in such position while engaged by the clutching members.

' My invention is not restricted to the precise structure of theclutching members, for they may be varied or changed in specific detailswithout departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new and desire tosecure by Let ters Patent is 1. The combination with a rotatablespindle, of elongated bobbin-clutching members, rotatable therewith andadapted to interiorly engage a bobbin, means to limit outward movementof said members, and means whereby outward movement of one of saidmembers positively eiiects simultaneous and uniform outward movement ofthe other members.

2. The combinationwith a rotatable spindle, of elongatedbobbin-clutching members rotatable therewith, and adapted to interiorlyengage a bobbin, means to limit outward movement of said members, andmeans to effect mutual engagement between adjacent members whereby saidmembers will move outward simultaneously and uniformly to center thebobbin with relation to the spindle.

3. The combination, with a rotatable spindle, oi elongated,centrifugally-acting bob-' bin-clutching members rotatable therewith andadapted to interiorly engage a bobbin, and means whereby outwardmovement of each member eflects simultaneous and equal outward movementof the adjacent member.

4. The combination, with a rotatable spindle, of elongated,centrifugally-aeting bob binclutching members rotatable therewith andadapted to interiorly engage a bobbin, and means on each member toengage the inner faces of adjacent members and eii'eet outward movementof the several members simultaneously and uniformly.

5. The combination, with a rotatable spindle, of three elongated andtransversely segmental, centrifugally-acting bobbin-clutching memberssurrounding and rotatable with the spindle, and lateral projections oneach member to extend back of the adjacent edges of the other twomembers, to efl'ect outward movement of all the members simultaneouslyand uniformly.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

ANDREW l). MORSE.

Witnesses GEORGE OTrs DRAPER, ERNEST W. Woon.

